Device of processing low ignition propensity cigarette paper and device of manufacturing low ignition propensity cigarette paper including the same

ABSTRACT

A device of processing a low ignition propensity cigarette paper includes a concave or convex surface portion facing a surface of a low ignition propensity cigarette paper having a coating portion, and a body portion supplied with energy from a heat source or a cooling source, and dries or cools the low ignition propensity cigarette paper.

TECHNICAL FIELD

A device of processing a low ignition propensity cigarette paper and a device of manufacturing a low ignition propensity cigarette paper including the same are provided.

BACKGROUND ART

In general, various kinds of leaf tobaccos are mixed and processed to obtain desired smell and taste in order to manufacture cigarettes. Next, cut tobacco leaves or shredded tobaccos are produced by cutting the processed leaf tobaccos and a cigarette without a filter is produced by wrapping the cut tobacco leaves with a cigarette paper. Next, a filter may be attached to the non-filter cigarette. A cigarette filter may contain active carbon and a flavor material. A cigarette filter may be formed in a mono-filter or a multi-filter and is wrapped with a cigarette filter-wrapping paper. The cut tobacco leaves and the tobacco filter are connected by a tipping paper and the tipping paper may have fine holes. The cigarette paper may be manufactured not only to achieve target tar and target nicotine in smoking by appropriate porosity and combustibility, but to be provided with the peculiar smoke flavor of the cigarette. The cigarette paper may be made of flax or wood pulp. A low ignition propensity cigarette paper is coated with a substance such as starch in a band shape and the porosity of the coating portion is low, so that when the combustion of the tobacco reaches the band portion, the amount of oxygen flowing into the cut tobacco leaves reduces and the cigarette may be put out.

When the coated low ignition propensity cigarette paper is dried or cooled, the coated cigarette paper may be curled by contraction of a coating layer, so that imbalance may be generated in drying or cooling and poor moving of the cigarette paper may be generated.

The above information disclosed in this Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art.

DISCLOSURE OF INVENTION Technical Problem

An embodiment may reduce imbalance in drying or cooling of a low ignition propensity cigarette paper.

An embodiment may reduce poor moving of a low ignition propensity cigarette paper.

The present invention may be used to achieve other objects that are not stated in detail, other than the objects described above.

Solution to Problem

An exemplary embodiment provides a device of processing a low ignition propensity cigarette paper, which includes a concave or convex surface portion facing a surface of a low ignition propensity cigarette paper having a coating portion, and a body portion supplied with energy from a heat source or a cooling source, and dries or cools the low ignition propensity cigarette paper.

A cross-sectional shape of the surface portion may correspond to a cross-sectional shape of the low ignition propensity cigarette paper.

A radius R may be about 100 mm to 200 mm in a degree of curving of the surface portion.

An exemplary embodiment provides a device of manufacturing a low ignition propensity cigarette paper, which includes a coating unit that discharges a low ignition propensity cigarette paper having a coated portion by coating a cigarette paper with a coating composition, and a processing unit that dries or cools the low ignition propensity cigarette paper, by using a concave or convex surface portion facing a surface of the low ignition propensity cigarette paper.

The processing unit may further have a body portion that is supplied with energy from a heat source or a cooling source.

ADVANTAGEOUS EFFECTS OF INVENTION

An exemplary embodiment may reduce imbalance in drying or cooling of a low ignition propensity cigarette paper and may decrease poor moving of the low ignition propensity cigarette paper.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a cross-sectional view schematically showing a device of manufacturing a low ignition propensity cigarette paper according to an exemplary embodiment.

FIG. 2 is a cross-sectional view schematically showing a processing device according to an exemplary embodiment.

FIG. 3 is a cross-sectional view schematically showing the processing device of FIG. 2.

FIG. 4 is a cross-sectional view schematically showing a processing device according to an exemplary embodiment.

FIG. 5 is a cross-sectional view schematically showing the processing device of FIG. 4.

FIG. 6 is a cross-sectional view schematically showing a cross-section of a low ignition propensity cigarette paper.

FIG. 7 is a perspective view schematically showing a cigarette including a low ignition propensity cigarette paper.

FIG. 8 is a cross-sectional view schematically showing a cigarette including a low ignition propensity cigarette paper.

FIG. 9 is a cross-sectional view schematically showing a cigarette including a low ignition propensity cigarette paper.

MODE FOR THE INVENTION

The present invention will be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the accompanying drawings, portions unrelated to the description will be omitted in order to obviously describe the present invention, and like reference numerals will be used to describe like components throughout the present specification. Further, detailed descriptions of well-known technologies are not provided.

Hereinafter, a device of processing a low ignition propensity cigarette paper and a device of manufacturing a low ignition propensity cigarette paper according to an exemplary embodiment will be described in detail with reference to FIGS. 1 to 9.

FIG. 1 is a cross-sectional view schematically showing a device of manufacturing a low ignition propensity cigarette paper according to an exemplary embodiment, FIG. 2 is a cross-sectional view schematically showing a processing device according to an exemplary embodiment, FIG. 3 is a cross-sectional view schematically showing the processing device of FIG. 2, FIG. 4 is a cross-sectional view schematically showing a processing device according to an exemplary embodiment, FIG. 5 is a cross-sectional view schematically showing the processing device of FIG. 4, FIG. 6 is a cross-sectional view schematically showing a cross-section of a low ignition propensity cigarette paper, FIG. 7 is a perspective view schematically showing a cigarette including a low ignition propensity cigarette paper, and FIG. 8 is a cross-sectional view schematically showing a cigarette including a low ignition propensity cigarette paper.

Referring to FIG. 1, a roll of cigarette paper 19 is supplied to a coating unit 100 through rollers 910, 920, and 930. The coating unit 100 is a unit that coats a coating composition 17 on the cigarette paper 19. For example, the coating unit 100 may include a flat roller 110 and a concave roller 120. As the concave roller 120 rotates, the coating composition 17 is transmitted to the flat roller 110 and then applied onto the cigarette paper 19 by the flat roller 110, and the low ignition propensity cigarette paper 19 coated with the coating composition 17 is moved through the roller 930. The coating unit 100 may include a supplying member 140 filled with the coating composition 17. Referring to FIG. 1, the supplying member 140 may supply the coating composition 17 to a lower portion of the concave roller 120. Further, the supplying member 140 may supply the coating composition 17 to an upper portion where the concave roller 120 and the flat roller 110 meet each other.

The low ignition propensity cigarette paper 19 coated with the coating composition 17 through the coating unit 100 passes through processing units 210 and 220 that dry or cool coating portions 18. For example, the processing units 210 and 220 that dry the cigarette paper 19 may be supplied with heat energy into bodies of the processing units 210 and 220 from a heat source and the processing units 210 and 220 cooling the cigarette paper 19 may be supplied with cooling energy into bodies of the processing units 210 and 220.

Since the low ignition propensity cigarette paper 19 coated with the coating composition 17 has a property that the coating composition 17 retracts when the coating portion 18 is dried or cooled, the low ignition propensity cigarette paper 19 may have a concave or convex shape. The surface of the processing unit 210 may have a concave or convex shape, corresponding to the concave or convex shape of the low ignition propensity cigarette paper 19. Accordingly, the degree of drying or cooling of the surface of the cigarette paper may be balanced, and poor moving of the low ignition propensity cigarette paper due to insufficient drying or cooling may be reduced. For example, in the degree of curving of the concave or convex shape, the radius R may be about 100 mm to about 200 mm.

On the contrary, in a processing device having a flat surface, the degree of drying or cooling of a cigarette paper may be unbalanced when a low ignition propensity cigarette paper is dried or cooled, so that poor moving of the cigarette paper may be generated.

Moisture contents of a cigarette paper were measured at several portions by a processing device having a concave or convex shape and a processing device having a flat surface, as shown in FIG. 6, are shown in Table 1. In the degree of curving of the processing device having a concave surface, the radius R is about 150 mm.

TABLE 1 Moisture content at each portion Surface of of cigarette paper (%) processing device A B C Concave surface 5.6 5.7 5.7 Flat surface 7.3 5.5 7.6

As shown in Table 1, it may be seen that the moisture contents of the cigarette paper 19 measured by the processing device having a concave surface is uniform regardless of the portions.

One or more of the processing units 210 and 220 may be disposed over the cigarette paper 19 and one or more of the processing units 210 and 220 may be disposed under the cigarette paper 19.

The low ignition propensity cigarette paper 19 before or after passing the processing units 210 and 220 may be moved by a moving unit.

The low ignition propensity cigarette paper 19 may be supplied to a device of manufacturing a cigarette which includes a low ignition propensity cigarette paper through the moving unit.

A device of manufacturing a low ignition propensity cigarette paper may be implemented in an on-line type by being mounted in a device of producing a cigarette or may be implemented in an off-line type by being mounted outside a device of producing a cigarette. Referring to FIGS. 7 and 8, a cigarette 1 has a cigarette column portion 10 that is burned and a cigarette filter portion 20 that filters tobacco smoke. The cigarette column portion 10 may be wrapped with the cigarette paper 19 and the cigarette filter portion 20 may be wrapped with a cigarette filter wrapping paper 28. The cigarette column portion 10 and the cigarette filter portion 20 may be connected by the tipping paper 29. The circumference of a cigarette may be about 5 mm to 30 mm. The cigarette filter portion 20 may be omitted. The cigarette column portion 10 includes cut tobacco leaves 11 cut from a leaf tobacco processed by various methods. The cigarette filter portion 20 may has a first filter portion 21. The first filter portion 21 may be made of acetate tow or paper. The cigarette filter portion 20 may be a multi-filter including two or more filter members. For example, referring to FIG. 9, the cigarette filter portion 20 may include a first filter portion 20, a second filter portion 22, and a third filter portion 23. Further, the cigarette filter portion 20 may include three filter members or four filter members. The cigarette filter portion 20 may contain an absorbent and a flavor material. For example, the absorbent may be active carbon and the flavor material may be an herb-smelled material. One or more filter members in a multi-filter may contain at least one of an absorbent or a flavor material. For example, referring to FIG. 9, at least one of the second filter portion 22 and the third filter portion 23 may contain at least one of an absorbent or a flavor material. The low ignition propensity cigarette paper 19 has one or more coating portions 18. For example, the coating portion 18 may have a band shape, but may have other various shapes. The number, thickness, and shape of the coating portion 18 may be changed in various ways and the gaps between the coating portions 18 may be changed in various ways. The coating portion 18 may reduce porosity of the cigarette paper 19, and accordingly, when combustion of the cigarette reaches the coating portion 18, the amount of oxygen flowing into the cigarette column portion 10 decreases and the cigarette 1 may be put out. The cigarette paper 19 having the coating portions 18 is also called a low ignition propensity cigarette paper. A coating composition is coat at the coating portion 18. For example, the porosity of the cigarette paper 19 may be about 85 cu or less and the porosity of the coating portion 18 may be about 5 cu to about 20 cu. The thickness of the base paper of the cigarette paper may be about 30 μm to about 60 μm and the basis weight of the base paper may be about 15 g/m² to about 40 g/m². The thickness of the coating portion 18 may be about 5 μm or less and the basis weight of the coating portion 18 may be about 15 g/m² or less. The ratio of the weight of the coating composition to the total weight of the cigarette paper 19 and the coating composition may be about 35 wt % or less. When the coating portion 18 has a band shape, the weight of the coating composition per band may be 2.5 mg or less. The cigarette paper 19 may include filler, and accordingly, opacity of a cigarette paper may increases and porosity may be provided to a cigarette paper, and flatness and ash integrity of a cigarette paper may be improved and whiteness of a cigarette paper may increase. For example, the filler may be calcium carbonate, titanium dioxide, or magnesium oxide. The filler may be used by about 20 wt % to about 40 wt % to the entire weight of the cigarette paper.

While this invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. 

1. A device for processing a low ignition propensity cigarette paper, comprising: a concave or convex surface portion configured to face a surface of a low ignition propensity cigarette paper having a coating portion; and a body portion configured to be supplied with energy from a heat source or a cooling source, wherein the device is configured to dry or cool the low ignition propensity cigarette paper-is dried or cooled.
 2. The device of claim 1, wherein a cross-sectional shape of the surface portion corresponds to a cross-sectional shape of the low ignition propensity cigarette paper.
 3. The device of claim 2, wherein a radius R is 100 mm to 200 mm in a degree of curving of the surface portion.
 4. A device for manufacturing a low ignition propensity cigarette paper, comprising: a coating unit configured to discharge a low ignition propensity cigarette paper having a coated portion by coating a cigarette paper with a coating composition; and a processing unit configured to dry or cool the low ignition propensity cigarette paper, by using a concave or convex surface portion configured to face a surface of the low ignition propensity cigarette paper, wherein the coating unit comprises a flat roller and a concave roller that are disposed adjacent to each other to rotate, wherein the coating unit is configured to deliver the coating composition to the flat roller by rotation of the concave roller, wherein the coating unit is configured to coat the coating composition on the cigarette paper by the flat roller, and wherein the processing unit comprises a body portion configured to be supplied with energy from a heat source or a cooling source.
 5. (canceled)
 6. The device of claim 4, wherein a cross-sectional shape of the surface portion corresponds to a cross-sectional shape of the low ignition propensity cigarette paper.
 7. The device of claim 6, wherein a radius R is 100 mm to 200 mm in a degree of curving of the surface portion. 